Question

You ask 65 of your classmates if they have any siblings. Complete the​ two-way frequency table to show the results of the survey.

Answer 1

• 15
• 5; 25
• 35; 65

Explanation:

Fill in the missing values as below

The first row

• 40 - 25 = 15

The second row

• 30 - 25 = 5
• 20 + 5 = 25

The third row

• 15 + 20 = 35
• 35 + 30 = 65 or 40 + 25 = 65